ASTM D2372-85(1999)
(Practice)Standard Practice for Separation of Vehicle From Solvent-Reducible Paints
Standard Practice for Separation of Vehicle From Solvent-Reducible Paints
SCOPE
1.1 This practice covers the procedure for the separation of the vehicle from the pigment in solvent-reducible paint.
1.2 In the development of the practice the following materials were tested:white soya and white fish oil isophthalic alkyd semi-gloss enamels, white linseed oil paint, white soya and white linseed -phthalic alkyd enamels. It is considered to be applicable to similar materials.
1.3 This standard does not purport to address the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.>
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Designation:D2372–85(Reapproved1999)
Standard Practice for
Separation of Vehicle From Solvent-Reducible Paints
This standard is issued under the fixed designation D 2372; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope niques. Characterization of vehicles is important since they
play a major role in the performance of coatings.
1.1 This practice covers the procedure for the separation of
the vehicle from the pigment in solvent-reducible paint.
4. Apparatus
1.2 In the development of the practice the following mate-
4.1 Centrifuge, high-speed, capable of developing in excess
rials were tested: white soya and white fish oil isophthalic
of 10 000 g.
alkyd semi-gloss enamels, white linseed oil paint, white soya
and white linseed o-phthalic alkyd enamels. It is considered to
NOTE 1—Calculate the gravity developed by the centrifuge as follows:
be applicable to similar materials.
26 2
g 5 1.118 3 10 3 r 3 n (1)
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
where:
r 5 rotating radius, mm, and
responsibility of the user of this standard to establish appro-
n 5 rotating speed, r/min.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
5. Procedure
2. Referenced Documents
NOTE 2—If the percent of pigment is desired, see Test Method D 2371
and Test Method D 2698.
2.1 ASTM Standards:
D 2371 Test Method for Pigment Content of Solvent-
5.1 Mix the sample until it is homogeneous, preferably on a
Reducible Paints
mechanical shaker.
D 2698 Test Method for Determination of the Pigment
5.2 Centrifuge about 20 mL of the whole paint on a
Content of Solvent-Reducible Paints by High-Speed Cen-
high-speed centrifuge in excess of 10 000 g (Note 1) for 30
trifuging
min or until s
...
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